[Sound-open-firmware] Generic power management layer

Hi Liam, Ranjani,

I am now looking at implementing the PM features on i.MX platforms and I have some questions.

1) Where can I find some documentation about the SHIM layer PM related registers.

e.g apollolake/include/platform/lib/shim.h:

#define SHIM_PWRCTL 0

2) I am looking if it makes sense to have some generic Xtensa code to put the core in reset at PM suspend. I have seen this registers:

arch/xtensa/include/xtensa/xdm-regs.h: #define PWRCTL_CORE_RESET

I wonder if this would make sense for Intel side? Is there any documentation about the PM states of HIfi DSP in Intel integrations?

thanks, Daniel.